Question

Question #204ec

Answer 1

There are only two hydrogens because the bromine atoms have replaced the other four.

Explanation:

The convention in naming organic compounds is that substituents (such as `"Br"`) replace or substitute the `"H"` atoms on the `"C"`.

The parent alkane is ethane

So, the product of tetrabromination is

The `"Br"` atoms have replaced four of the `"H"` atoms.